Mitsubishi Heavy Industries Limited

Hitachi, Ltd.

Brother Kogyo Kabushiki-Kaisha

E.i. Dupont De Nemours and Company

Tdk Corporation

Komatsu Corporation

The University of Tokyo

Nec Corporation

The Furukawa Electric Co., Ltd.

Proterial, Ltd.

Kobe University

Mistubishi Heavy Industries, Ltd.

Akita University

Toshio Abe

Kiyoka Takagi

Nobuyuki Kamihara

Kazuaki Kishimoto

Takashi Ishida

Masahiro Kashiwagi

Yoshinori Nonaka

Takayuki Shimizu

Takayuki Koyama

Etsuko Nishimura

Yuichiro Kamino

Sota Kamo

Shin Ota

Hitoshi Saito

Susumu Takahashi

Yasuyuki Suzuki

Takaaki Suzuki

Koichi Hasegawa

Seiichi Takahashi

Takefumi Okumura

Masayuki Yamashita

Nobuo Takeda

Nozomi Saito

Shuichi Suzuki

Hideaki Tanaka

Mamoru Kimura

Makoto Okai

Shin Takahashi

Motoki Ohta

Jun Ishida

Yuya Tanaka

Katsunori Nishimura

Masami Miura

Naomoto Ishikawa

Akihisa Okuda

Kengo Yamaguchi

Satoshi Kodama

Takayuki Nomura

Hirokazu Yoshida

Shigeru Nishiyama

Tetsuya Kato

Akira Ikada

Hiroshi Haruna

Kouji Esaki

Mikio Muraoka

Satoshi Teshigawara

Tooru Shitani

Katsuhiro Kitajima

Masakazu Takahashi

Koichi Saito

Chieko Araki

Shu Minakuchi

Katsuya Yoshino

Masaharu Kamihara

Kazuharu Maeda

Seizo Tanaka

Kouichi Saito

Toshiyuki Takayanagi

Shuji Tomimatsu

Shinichi Yoshida

Ryo Inoue

Yutaka Terada

Yasutaka Tanaka

Tsukasa Takazawa

Takuya Matsumoto

Shinya Honda

Yoshihiro Sugiyama

Kouji Yasuoka

Katsumasa Sasaki

Noriyoshi Mitsudome

Sahoko Iwatani

Takushi Sugiyama

Yoshiro Aoshima

Shinichi Aoki

Hirohisa Sano

Kyohei Aimuta

Takaaki Yumitori

Sae Obata

Kosuke Takahashi

Keigo Uhira

Takashi Nishino

Akira Miyagaki

Toshiaki Enokida

Hideyuki Suzuki

Toshiyuki Yamazaki

The stator for a rotating electrical machine includes an annular first iron core part, which is a stacked body including electrical steel plates, and second iron core part, which is a stacked body including an amorphous soft magnetic metal or a nanocrystalline soft magnetic metal, wherein: the annular first iron core part includes a plurality of tooth parts which protrude toward the inner circumferential side and around which a coil is wound, and first groove parts formed within each tooth part from an outer circumferential surface; and the second iron core parts are disposed in the first groove parts.

Stator for rotating electrical machine, rotating electrical machine, method for manufacturing stator for rotating electrical machine, and method for manufacturing rotating electrical machine

A wing used for an aircraft includes a configuration member formed of a composite material. The configuration member is divided into a plurality of regions along a surface thereof. The plurality of regions include a first region formed of the composite material of a high strength type, and a second region formed of the composite material of a high elasticity type having higher rigidity than the high strength type. The first region includes any region closest to a wing end side out of the plurality of regions, and the second region includes a region closest to the wing end side and a trailing edge side out of the plurality of regions.

Wing and wing design method

A composite material includes stacked reinforced fiber substrates and has a thickness-varying part whose thickness in a stacking direction changes from a large thickness to a small thickness. The reinforced fiber substrate that has the drop-off portion and is positioned between a base substrate and a cover substrate in the stacking direction is set as a cut substrate. Stress analysis is performed on the base substrate, the cut substrate, and the cover substrate to calculate an evaluation value concerning stress on the cut substrate. A reinforced fiber substrate in the thickness-varying part is set at the cut substrate, based on the calculated evaluation value.

Method of designing composite material, method of evaluating composite material, and composite material

A method for manufacturing a resin sheet includes a coating step; a heating step; and a pressurizing step. In the coating step, linear metal nanomaterial is coated on a surface of a resin film having thermal plasticity. In the heating step, the resin film having the linear metal nanomaterial coated on the surface thereof is heated and softened. In the pressurizing step, the resin film having the linear metal nanomaterial coated on the surface thereof is pressurized to press the linear metal nanomaterial along a direction orthogonal to the surface on which the linear metal nanomaterial is coated. Thus, the coated linear metal nanomaterial penetrates the resin film to obtain the resin sheet containing the linear metal nanomaterial.

Method for manufacturing resin sheet, resin sheet, method for manufacturing structural body, structural body, and airframe of aircraft

A composite-material molding apparatus for molding a composite material, wherein the molding apparatus is provided with: a main body; a composite-material layer in which a molding face for molding a composite material is formed, the composite-material layer coating the surface of the main body; a filamentous fiber-optic temperature sensor embedded in the composite-material layer; a heating unit provided inside the main body; and a control device for controlling the heating unit on the basis of the temperature measured by the fiber-optic temperature sensor; the fiber-optic temperature sensor being disposed in planar fashion in a plane parallel to the molding face.

Composite-material molding apparatus and composite-material molding method

A method is for treating a surface of a resin material layer. The method includes a first step of introducing as a substituent at least one selected from the group consisting of an acid halide and an alkyl halide into an aromatic polyether-based resin included in the resin material layer by Friedel-Crafts reaction.

Method for treating surface of resin material layer and resin material

A bladder bag is a mold for molding inside of a composite material structure. The composite material structure includes a narrow portion formed by narrowing a part of the inside and a space portion formed so as to be adjacent to the narrow portion. The bladder bag includes a bladder bag main body and a cord-like member. The bladder bag main body includes a narrow molding portion for molding the narrow portion of the composite material structure, a space molding portion for molding the space portion of the composite material structure, and an air intake for introducing air. The cord-like member is provided inside the bladder bag main body, passes through the narrow molding portion from the air intake, and is connected to an inner surface of the space molding portion.

Bladder bag and molding method of composite material

A computer-implemented method is for designing a composite material in which reinforcement fiber base materials are laminated. The composite material includes a hole extending in a lamination direction of the reinforcement fiber base materials and a reinforcement part provided around the hole. The method includes calculating a strain value generated in the composite material based on design factors and a predetermined load condition, the design factors including a shape of the hole, a shape of the reinforcement part, and an orientation angle of each of the reinforcement fiber base materials in respective layers of the reinforcement part; and optimizing the design factors based on a genetic algorithm such that the calculated strain value tends to decrease.

Method for designing composite material and composite material

A composite structure includes a stepped portion formed by laminating a plurality of plies with end surfaces thereof being shifted from each other. The composite structure includes a body portion which includes a first structure portion where a first ply is laminated on a top layer of the first structure portion, a second structure portion where a second ply is laminated on a top layer of the second structure portion, and the stepped portion disposed between the first structure portion and the second structure portion, the second ply being positioned at a distance from the first ply in a lamination direction, and a first cover ply which includes a covering portion covering the stepped portion, one end portion, and the other end portion and is formed so as to cover only a part of a surface of the first ply or a part of a surface of the second ply.

Composite structure

This composite material structure is provided with: a first composite member arranged facing a heating element , the first composite member including PAN-based carbon fibers; a second composite member arranged between the heating element and the first composite member, the second composite member including pitch-based carbon fibers; and a cushioning element provided between the first composite member and the second composite member, the cushioning element being joined to each of the first composite member and the second composite member, and having lower rigidity than those of the first composite member and the second composite member. The first composite member is provided so as to be linked to an adjacent structure, while the second composite member and the cushioning element are provided so as to be separated from the structure.

Composite material structure

A joint evaluation method of evaluating a joint state of a joint portion in a composite including the joint portion in which a first adherend and a second adherend are joined to each other through an adhesive is provided. The joint evaluation method includes applying an alternating-current signal to the joint portion; changing frequency to measure current and voltage; calculating an evaluation value related to a given electrical characteristic from a current value and a voltage value obtained by the measurement; comparing the evaluation value with a preset criterion related to the given electrical characteristic; and evaluating the joint state of the joint portion according to an amount of deviation of the evaluation value from the preset criterion.

Joint evaluation method

A method of manufacturing a structure includes: a molding step of impregnating carbon fibers with a resin material and curing the resin material for molding a carbon fiber composite material; a polishing step of polishing a polishing region on a surface of the carbon fiber composite material molded in the molding step, with an abrasive that has a predetermined hardness; and a bonding step of bonding, through an adhesive, another member to a part of the polishing region polished by the polishing step. The molding step forms, in a top layer, a polishing layer that has a hardness which is lower than the predetermined hardness, and forms a surface protective layer that is lower than the polishing layer, protects the carbon fiber composite material from the abrasive, and contains a protective filler having a hardness which is higher than the predetermined hardness.

Method of manufacturing structure, and structure

A core () and a bag () are provided which are used to shape an FRP structure (). The bag () has a core bag section () which covers the outer circumference of the core (), and a coverture bag section () which covers a plurality of fiber components ().

FRP shaping jig and method of shaping FRP structure

The purpose of the present invention is to provide a bonded structure, a method for manufacturing the same, and a bonding state detection method which are capable of determining whether or not members are bonded together appropriately. A bonded structureincludes a laminated sheetA, a laminated sheetB, an adhesivethat bonds the laminated sheetA and the laminated sheetB together, and a distributed optical fibersandwiched between the laminated sheetA and the laminated sheetB. The cross-sectional shape of the distributed optical fiberis deformed in accordance with the bonding state.

Bonded structure, method for manufacturing the same, and bonding state detection method

This structure is provided with a first composite material, a second composite materialjoined to the first composite materialby a film adhesiveprovided between the first composite materialand the second composite material, and a corner fillet partprovided on a corner partformed by the first composite materialand the second composite material. The shape of the corner fillet partis a design shape P designed in advance, and the corner fillet partis formed by curing the film adhesiveafter arranging the film adhesiveon the corner partso as to fit into the design shape P.

Composite structure and method for molding composite structure

Growing community of inventors

Tokyo, Japan

Toshio Abe